Full disclosure: The developer is a friend and I was involved in the beta.
After getting laid off months ago, I was struggling to get a new job. I always get nervous before interviews and I am too embarrassed to practice with friends. I got access to the Beta and I used it to help me get in the interviewing mindset, completely privately! Hearing the questions and seeing a microphone recording light really helped force me to practice! I started using it the day before an inteview and an hour before an interview. I'm happy to say I now have a job offer! Thanks Jason!